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Recent questions and answers in Soil Mechanics
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GATE Civil 2021 Set 2  Question: 10
The most appropriate triaxial test to assess the longterm stability of an excavated clay slope is consolidated drained test unconsolidated undrained test consolidated undrained test unconfined compression test
asked
Mar 1
in
Soil Mechanics
by
jothee
(
5.2k
points)
gatecivil2021set2
consolidationtest
0
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0
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2
GATE Civil 2021 Set 2  Question: 11
As per the Unified Soil Classification System $\text{(USCS)}$, the type of soil represented by $\text{MH}$' is Inorganic silts of high plasticity with liquid limit more than $50\%$ Inorganic silts of low plasticity with liquid limit less ... high plasticity with liquid limit less than $50\%$ Inorganic clays of low plasticity with liquid limit more than $50\%$
asked
Mar 1
in
Soil Mechanics
by
jothee
(
5.2k
points)
gatecivil2021set2
unifiedandindianstandardsoilclassificationsystem
0
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0
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3
GATE Civil 2021 Set 2  Question: 30
A clay layer of thickness $\text{H}$ has a preconsolidation pressure $p_{c}$ and an initial void ratio $e_{0}$.The initial effective overburden stress at the midheight of the layer is $p_{0}$. At the same location, the increment in effective stress due to applied external load ...
asked
Mar 1
in
Soil Mechanics
by
jothee
(
5.2k
points)
gatecivil2021set2
timerateofconsolidation
0
votes
0
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4
GATE Civil 2021 Set 2  Question: 35
From laboratory investigations, the liquid limit, plastic limit, natural moisture content and flow index of a soil specimen are obtained as $60\%, 27\%, 32\%$ and $27$, respectively. The corresponding toughness index and liquidity index of the soil specimen, respectively, are $0.15$ and $1.22$ $0.19$ and $6.60$ $1.22$ and $0.15$ $6.60$ and $0.19$
asked
Mar 1
in
Soil Mechanics
by
jothee
(
5.2k
points)
gatecivil2021set2
compactionofsoil
atterberglimits
0
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0
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5
GATE Civil 2021 Set 2  Question: 47
The void ratio of a clay soil sample $\text{M}$ decreased from $0.575$ to $0.510$ when the applied pressure is increased from $\text{120 kPa}$ to $\text{180 kPa}$. For the same increment in pressure, the void ratio of another clay ... of consolidation of sample $\text{M}$ to sample $\text{N } (\textit{round off to three decimal places}$) is __________________
asked
Mar 1
in
Soil Mechanics
by
jothee
(
5.2k
points)
gatecivil2021set2
numericalanswers
timerateofconsolidation
0
votes
0
answers
6
GATE Civil 2021 Set 1  Question: 7
In an Oedometer apparatus, a specimen of fully saturated clay has been consolidated under a vertical pressure of $\text{50 kN/m}^2$ and is presently at equilibrium. The effective stress and pore water pressure immediately on increasing the vertical stress to $\text{150 kN/m}^2$, ... $\text{50 kN/m}^2$ and $\text{100 kN/m}^2$ $0$ and $\text{150 kN/m}^2$
asked
Feb 20
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gatecivil2021set1
soilclassification
timerateconsolidation
0
votes
0
answers
7
GATE Civil 2021 Set 1  Question: 8
A partiallysaturated soil sample has natural moisture content of $25\%$ and bulk unit weight of $\text{18.5 kN/m}^3$. The specific gravity of soil solids is $2.65$ and unit weight of water is $\text{9.81 kN/m}^3$. The unit weight of the soil sample on full saturation is $\text{21.12 kN/m}^3$ $\text{19.03 kN/m}^3$ $\text{20.12 kN/m}^3$ $\text{18.50 kN/m}^3$
asked
Feb 20
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gatecivil2021set1
soilproperties
saturatedsoil
upliftpressure
0
votes
0
answers
8
GATE Civil 2021 Set 1  Question: 31
Based on drained triaxial shear tests on sands and clays, the representative variations of volumetric strain $\left ( \Delta V/V \right )$ with the shear strain $\left ( \gamma \right )$ is shown in the figure. Choose ... clay Curve $P$ represents loose sand and normally consolidated clay, while Curve $Q$ represents dense sand and overconsolidated clay
asked
Feb 20
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gatecivil2021set1
stressstraincharacteristicsofclayandsand
0
votes
0
answers
9
GATE2020CE17
In a twodimensional stress analysis, the state of stress at a point $P$ is $\begin{bmatrix} \sigma \end{bmatrix} = \begin{bmatrix}\sigma_{xx} &\tau_{xy} \\ \tau_{xy} &\sigma_{yy} \end{bmatrix}$ The necessary and sufficient condition for existence of the state of pure shear at ... $\tau_{xy}=0$ $\sigma_{xx}+\sigma_{yy}=0$ $(\sigma_{xx}\sigma_{yy})^2+4\tau^2_{xy}=0$
asked
Feb 28, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce1
matrix
twodimensionalflow
geotechnicalengineering
0
votes
0
answers
10
GATE2020CE122
In a drained triaxial compression test, a sample of sand fails at deviator stress of $150\:kPa$ under confining pressure of $50\:kPa$. The angle of internal friction (in degree, round off to the nearest integer) of the sample, is ______
asked
Feb 28, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce1
soilmechanics
geotechnicalengineering
characteristicsofsand
numericalanswers
0
votes
0
answers
11
GATE2020CE128
Distributed load(s) of $50\:kN/m$ may occupy position(s) (either continuously or in patches) on the girder $\textbf{PQRST}$ as shown in the figure (not drawn to the scale) The maximum negative (hogging) bending moment (in $kN.m$) that occurs at point $\textbf{R}$, is $22.50$ $56.25$ $93.75$ $150.00$
asked
Feb 28, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce1
effectivestress
0
votes
0
answers
12
GATE2020CE134
The total stress paths corresponding to different loading conditions, for a soil specimen under the isotropically consolidated stress state (O), are shown below ... $OPIII, OQII, ORI, OSIV$ $OPI, OQIII, ORII, OSIV$
asked
Feb 28, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce1
stresspaths
consolidation
0
votes
0
answers
13
GATE2020CE147
Water flows in the upward direction in a tank through $2.5\;m$ thick sand layer as shown in the figure. The void ratio and specific gravity of sand are $0.58$ and $2.7$, respectively. The sand is fully saturated. Unit weight of water is $10\:kN/m^3$. The ... (in $kPa$, round off to two decimal places) at point $\textbf{A}$, located $1\:m$ above the base of tank, is ______.
asked
Feb 28, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce1
numericalanswers
stressstraincharacteristicsofclayandsand
0
votes
0
answers
14
GATE2020 CE26
The state of stress represented by Mohr’s circle shown in the figure is uniaxial tension biaxial tension of equal magnitude hydrostatic stress pure shear
asked
Feb 13, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce2
soilmechanics
geotechnicalengineering
mohr'scircle
stresspaths
0
votes
0
answers
15
GATE2020 CE210
Soil deposit formed due to transportation by wind is termed as aeolian deposit alluvial deposit estuarine deposit lacustrine deposit
asked
Feb 13, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce2
soilmechanics
geotechnicalengineering
soilstructure
aeoliandeposit
0
votes
0
answers
16
GATE2020 CE211
A sample of $500\:g$ dry sand, when poured into a $2$ litre capacity cylinder which is partially filled with water, displaces $188\:cm^3$ of water. The density of water is $1\:g/cm^3.$ The specific gravity of the sand is $2.72$ $2.66$ $2.55$ $2.52$
asked
Feb 13, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce2
geotechnicalengineering
soilmechanics
specificgravity
0
votes
0
answers
17
GATE2020 CE222
A soil has dry unit weight of $15.5\: kN/m^3$, specific gravity of $2.65$ and degree of saturation of $72\: %.$ Considering the unit weight of water as $10\: kN/m^3$, the water content of the soil (in $\%$ round off to two decimal places) is __________.
asked
Feb 13, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce2
numericalanswers
soilmechanics
quicksandcondition
0
votes
0
answers
18
GATE2020 CE223
A onedimensional consolidation test is carried out on a standard $19\: mm$ thick clay sample. The oedometer’s deflection gauge indicates a reading of $2.1\: mm$, just before removal of the load, without allowing any swelling. The void ratio is $0.62$ at this stage. The initial void ratio (round off to two decimal places) of the standard specimen is __________.
asked
Feb 13, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce2
numericalanswers
onedimensionalconsolidation
0
votes
0
answers
19
GATE2020 CE234
Permeability tests were carried out on the samples collected from two different layers as shown in the figure (not drawn to the scale). The relevant horizontal $(k_h)$ and vertical $(k_v)$ coefficients of permeability are indicated for each layer. The ratio of the equivalent horizontal to vertical coefficients of permeability, is $37.29$ $80.20$ $68.25$ $0.03$
asked
Feb 13, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce2
coefficientofpermeability
soilmechanics
geotechnicalengineering
0
votes
0
answers
20
GATE2020 CE247
A constanthead permeability test was conducted on a soil specimen under a hydraulic gradient of $2.5$. The soil specimen has specific gravity of $2.65$ and saturated water content of $20\%.$ If the coefficient of permeability of the soil is $0.1\: cm/s$, the seepage velocity (in $cm/s,$ round off to two decimal places) through the soil specimen is ________.
asked
Feb 13, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce2
numericalanswers
permeabilityone
permeabilityonedimensionalflow
coefficientofpermeability
0
votes
0
answers
21
GATE2020 CE248
A $5\: m$ high vertical wall has a saturated clay backfill. The saturated unit weight and cohesion of clay are $18\: kN/m^3$ and $20\: kPa$, respectively. The angle of internal friction of clay is zero. In order to prevent development of tension zone, the ... tension zone, the minimum height (in $m$, round off to one decimal place) by which the wall has to be raised, is ________.
asked
Feb 13, 2020
in
Soil Mechanics
by
jothee
(
5.2k
points)
gate2020ce2
numericalanswers
stressstraincharacteristicsofclayandsand
0
votes
0
answers
22
2015 gate mcq true or false type
State true statement for degree of disturbance of collected soil sample
asked
Dec 19, 2019
in
Soil Mechanics
by
Pratikshanere
(
120
points)
0
votes
0
answers
23
GATE2017 CE24
Let $G$ be the specific gravity of soil solids, $w$ the water content in the soil sample, $\gamma_w$ the unit weight of water, and $\gamma_d$ ... $\gamma_d = \dfrac{Gw}{1 + \gamma_w} \\$ $\gamma_d = \dfrac{Gw}{1  \gamma_w}$
asked
Aug 7, 2019
in
Soil Mechanics
by
gatecse
(
4k
points)
gate2017ce2
soilmechanics
geotechnicalengineering
0
votes
0
answers
24
GATE2017 CE224
The infiltration capacity of a soil follows the Horton's exponential model, $f=c_1+c_2e^{kt}$. During an experiment, the initial infiltration capacity was observed to be $200$ mm/h. After a long time, the infiltration capacity was reduced $25$ mm/h. If the filtration capacity ... $k$ (in $h^{1}$, up to two decimal places) is ________
asked
Aug 7, 2019
in
Soil Mechanics
by
gatecse
(
4k
points)
gate2017ce2
numericalanswers
soilmechanics
geotechnicalengineering
0
votes
0
answers
25
GATE2017 CE235
Following are the statements related to the stress paths in a triaxial testing of soils: If $\sigma_1 = \sigma_3$, the stress point lies at the origin of the $pq$ plot If $\sigma_1 = \sigma_3$, the stress point lies on the $p$axis of the $pq$ plot If $\sigma_1 > \sigma_3$, ...  True P  True; Q  False; R  True P  False; Q  True; R  False P  True; Q  False; R  False
asked
Aug 7, 2019
in
Soil Mechanics
by
gatecse
(
4k
points)
gate2017ce2
soilmechanics
geotechnicalengineering
stresspaths
0
votes
0
answers
26
GATE2019 CE1: 16
A retaining wall of height $H$ with smooth vertical backface supports a backfill inclined at an angle $\beta$ with the horizontal. The backfill consists of cohesionless soil having angle of internal friction $\phi$. If the active lateral thrust acting on the wall is $P_a$ ... $P_a$ acts at a height $H/3$ from the base of the wall and at an angle $\phi$ with the horizontal
asked
Feb 14, 2019
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gate2019ce1
soilmechanics
geotechnicalengineering
0
votes
0
answers
27
GATE2019 CE1: 17
In a soil specimen, the total stress, effective stress, hydraulic gradient and critical hydraulic gradient are $\sigma, \: \sigma’$, $i$ and $i_c$, respectively. For initiation of quicksand condition, which one of the following statements is TRUE? $\sigma’ \neq 0$ and $i=i_c$ $\sigma’ = 0$ and $i=i_c$ $\sigma’ \neq 0$ and $i \neq i_c$ $\sigma = 0$ and $i=i_c$
asked
Feb 14, 2019
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gate2019ce1
soilmechanics
geotechnicalengineering
quicksandcondition
0
votes
0
answers
28
GATE2019 CE1: 24
A soil has specific gravity of its solids equal to $2.65$. The mass density of water is $1000 \: kg/m^3$. Considering zero air voids and $10 \%$ moisture content of the soil sample, the dry density (in $kg /m^3$, round off to $1$ decimal place) would be ______
asked
Feb 14, 2019
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gate2019ce1
numericalanswers
soilmechanics
geotechnicalengineering
0
votes
0
answers
29
GATE2019 CE1: 25
A concentrated load of $500 \: kN$ is applied on an elastic half space. The ratio of the increase in vertical normal stress at depths of $2 \: m$ and $4 \: m$ along the point of the loading, as per Boussinesq’s theory, would be _____
asked
Feb 14, 2019
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gate2019ce1
numericalanswers
foundationengineering
geotechnicalengineering
boussinesqstheory
0
votes
0
answers
30
GATE2019 CE1: 29
For the following statements: P  The lateral stress in the soil while being tested in an oedometer is always atrest. Q  For a perfectly rigid strip footing at deeper depths in a sand deposit, the vertical normal contact stress at the footing edge is greater than that at its centre. R  ... FALSE; Q  FALSE; R  TRUE P  TRUE; Q  TRUE; R  FALSE P  FALSE; Q  FALSE; R  FALSE
asked
Feb 14, 2019
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gate2019ce1
soilmechanics
geotechnicalengineering
0
votes
0
answers
31
GATE2019 CE1: 53
A granular soil has a saturated unit weight of $20 \:kN/m^3$ and an effective angle of shearing resistance of $30^{\circ}$. The unit weight of water is $9.81 \: kN/m^3$. A slope is to be made on this soil deposit in which the seepage occurs ... seepage condition for a factor of safety of $1.5$, the safe slope angle (in degree, round off to $1$ decimal place) would be ________
asked
Feb 14, 2019
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gate2019ce1
numericalanswers
soilmechanics
geotechnicalengineering
seepagethroughsoils
0
votes
0
answers
32
GATE2019 CE2: 51
The dimensions of a soil sampler are given in the table. ... $2$ decimal places) is ______________
asked
Feb 12, 2019
in
Soil Mechanics
by
Arjun
(
8.7k
points)
gate2019ce2
numericalanswers
soilmechanics
0
votes
0
answers
33
GATE2016213
The results of a consolidation test on an undisturbed soil, sampled at a depth of $10 \: m$ ... weight of water as $10 \: kN/m^3$, the overconsolidation ratio of the soil is $0.67$ $1.50$ $1.77$ $2.00$
asked
Mar 28, 2018
in
Soil Mechanics
by
Milicevic3306
(
11.9k
points)
gate2016ce2
soilmechanics
geotechnicalengineering
consolidation
0
votes
0
answers
34
GATE2016218
A water supply board is responsible for treating $1500 \:m^3/day$ of water. A settling column analysis indicates that an overflow rate of $20 \: m/day$ will produce satisfactory removal for a depth of $3.1 \: m$. It is decided to have two circular settling tanks in parallel. The required diameter (expressed in $m$) of the settling tank is __________
asked
Mar 28, 2018
in
Soil Mechanics
by
Milicevic3306
(
11.9k
points)
gate2016ce2
numericalanswers
foundationengineering
geotechnicalengineering
settlementanalysis
0
votes
0
answers
35
GATE2016220
The sound pressure (expressed in $\mu P a$) of the faintest sound that a normal healthy individual can hear is $0.2$ $2$ $20$ $55$
asked
Mar 28, 2018
in
Soil Mechanics
by
Milicevic3306
(
11.9k
points)
gate2016ce2
soilmechanics
geotechnicalengineering
soundpressure
0
votes
0
answers
36
GATE2016240
The seepage occurring through an earthen dam is represented by a flownet comprising of $10$ equipotential drops and $20$ flow channels. The coefficient of permeability of the soil is $3 \: mm/min$ and the head loss is $5 \: m$. The rate of seepage (expressed in $cm^3/s$ per $m$ length of the dam) through the earthen dam is _________
asked
Mar 28, 2018
in
Soil Mechanics
by
Milicevic3306
(
11.9k
points)
gate2016ce2
numericalanswers
soilmechanics
geotechnicalengineering
seepage
coefficientofpermeability
0
votes
0
answers
37
GATE2016243
Water flows from P to Q through two soil samples, Soil $1$, Soil $2$, having cross sectional area of $80 \: cm^2$ as shown in the figure. Over a period of $15$ minutes, $200$ ml of water was observed to pass through any crosssection. The flowconditions ... of permeability of Soil $1$ is $0.02$ mm/s, the coefficient of permeability of Soil $2$ (expressed in mm/s) would be _________
asked
Mar 28, 2018
in
Soil Mechanics
by
Milicevic3306
(
11.9k
points)
gate2016ce2
numericalanswers
soilmechanics
geotechnicalengineering
permeabilityonedimensionalflow
0
votes
0
answers
38
GATE2016249
A tracer takes $100$ days to travel from Well$1$ to Well$2$ which are $100 \: m$ apart. The elevation of water surface in Well$2$ is $3 \: m$ below that in Well$1$. Assuming porosity equal to $15 \%$, the coefficient of permeability (expressed in $m/day$) is $0.30$ $0.45$ $1.00$ $5.00$
asked
Mar 28, 2018
in
Soil Mechanics
by
Milicevic3306
(
11.9k
points)
gate2016ce2
soilmechanics
geotechnicalengineering
coefficientofpermeability
0
votes
0
answers
39
GATE2016111
In the consolidated undrained triaxial test on a saturated soil sample, the pore water pressure is zero during shearing stage only at the end of consolidation stage only both at the end of consolidation and during shearing stages under none of the above conditions
asked
Mar 28, 2018
in
Soil Mechanics
by
Milicevic3306
(
11.9k
points)
gate2016ce1
soilmechanics
geotechnicalengineering
0
votes
0
answers
40
GATE2016112
A fine grained soil is found to be plastic in the water content range of $26 – 48 \%$. As per Indian Standard Classification System, the soil is classified as CL CH CLML CI
asked
Mar 28, 2018
in
Soil Mechanics
by
Milicevic3306
(
11.9k
points)
gate2016ce1
soilmechanics
geotechnicalengineering
grainedsoil
indianstandardsoilclassificationsystem
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